| <!DOCTYPE html> |
| <html> |
| <head> |
| <title> |
| Test AudioBufferSourceNode With Looping And Duration |
| </title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/webaudio/resources/audit-util.js"></script> |
| <script src="/webaudio/resources/audit.js"></script> |
| </head> |
| <body> |
| <script id="layout-test-code"> |
| let audit = Audit.createTaskRunner(); |
| audit.define('loop with duration', (task, should) => { |
| // Create the context |
| let context = new OfflineAudioContext(1, 4096, 48000); |
| |
| // Create the sample buffer and fill the second half with 1 |
| let buffer = context.createBuffer(1, 2048, context.sampleRate); |
| for(let i = 1024; i < 2048; i++) { |
| buffer.getChannelData(0)[i] = 1; |
| } |
| |
| // Create the source and set its value |
| let source = context.createBufferSource(); |
| source.loop = true; |
| source.loopStart = 1024 / context.sampleRate; |
| source.loopEnd = 2048 / context.sampleRate; |
| source.buffer = buffer; |
| source.connect(context.destination); |
| source.start(0, 1024 / context.sampleRate, 2048 / context.sampleRate); |
| // Expectations |
| let expected = new Float32Array(4096); |
| for(let i = 0; i < 2048; i++) { |
| expected[i] = 1; |
| } |
| // Render it! |
| context.startRendering() |
| .then(function(audioBuffer) { |
| should(audioBuffer.getChannelData, "audioBuffer.getChannelData").beEqualToArray(expected); |
| }) |
| .then(task.done()); |
| }); |
| |
| audit.run(); |
| |
| </script> |
| </body> |
| </html> |
